Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA1998TACOMA SR5, 2.7 MREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 4-CYLENGINE SENSORS & SWITCHESTHROTTLE POSITION SENSORCAMRY & CELICA
1998 Toyota Tacoma SR5, 2.7 M
Camry & Celica
1998 Toyota Tacoma SR5, 2.7 MSECTION Camry & Celica
- Ensure ignition is off. Disconnect electrical connector from Throttle Position (TP) sensor on throttle body. Note terminal identification on TP sensor. See Figure-Figure . Disconnect vacuum nose and apply vacuum to throttle opener.
- Using ohmmeter, check resistance between specified terminals in relation to throttle position. See TP SENSOR RESISTANCE SPECIFICATIONS (CAMRY & CELICA 2.2L) table. Replace components as necessary if resistance is not within specification.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.